Muted mp4 Videos play unmuted when viewed on a mobile device
Nov 30, 2015
By
Matt Painter
Hello,
I have several slides in my story that include muted video footage as a visual backing to my narration. The video format is mp4. I import the video, add any captions necessary etc and then mute the video's sound, recording an audio track for the narration which is the only thing learners will hear.
When the published story is viewed on a PC, it performs perfectly. Learners can see the footage, and hear only the narration.
However, when viewed on an iPad, using the Articulate player, these videos, wherever they appear in my story, all mysteriously become unmuted, which shatters my narration.
I can't see any related threads on here so far. I would really appreciate some advice on how to solve this, thanks!
13 Replies
Hi Matt!
This is an issue that is in the hands of our QA Team. I do not have any update to share regarding the issue nor do I have a timeframe.
I will add this thread for the team and so that this thread can be updated when applicable.
Thanks very much Leslie!
I am having the same issue. Here is my work around while this is being looked at by the QA team.
How to replace audio from original video and with new narration inside the original video. (Takes a novice 10 minutes). For PC users:
1. Open Windows Live Movie Maker. 2 Add video. 3. Click the edit tab at the top. 4. Click video volume on the far left and slide the bar to Mute. 5. Click Home tab and then click "Add Music". 6. Click "add music" again and navigate to your VO file and select. 7. Drag the placement bar (on your video) to where you want the video to end. Click the Edit tab and then click Set the END POINT. 8. Click The FILE tab and select Save Movie.
Thanks for sharing Greg!
Thanks for sharing your workaround here, Greg. I'm sure other users will find this very helpful!
Hi friendly staff... just wondering if there's an update here. I think I have my own workaround (SL2: Edit video, Volume, Reduce by 100%, Save and close) but SL2 is very slow at video editing and this is really rather painful, and somewhat unstable (I'm just now re-muting a video I was sure I had already reduced by 100%....). An update would be great thanks.
Hey Matt - Unfortunately I do not have an update to provide at this time on the issue.
Do you have a small sample file with the issue that I could take a look at?
Matt, just know that muting the video and adding a separate audio file in SL2 will not play as intended on OSI devices. OSI cannot play 2 media files at once. I learned this the hard way. If you are not publishing for mobile then no worries.
if you have camtasia or screenflow it is better to remove the audio and then add in the audio to the video.
Thanks guys. Leslie I tried to find a small example with the problem but I've been fixing them all and video makes large files...! So... if you just try to insert an MP4 into a slide, then select the 'mute' option from the 'video volume' drop down button, then add your own voiceover narration, then publish and view on an iPad, you will see what I mean. :)
Thanks Matt - that is the behavior we had reported, just wanted to verify.
I have another query. If I upgrade to Storyline 360 with Rise, will that solve the issue? Thanks.
Hello Matt - The issue seems to be moreso in the way mobile devices handle audio. I did track down a sample project, upgraded it to 360, and tested - I encountered same issue in the mobile version.
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